Questions
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How does Google select what ends up in the snippet before SERPs?
You mean "feature snippet"? http://www.hmtweb.com/marketing-blog/featured-snippets-from-seo-sem-industry/ http://searchengineland.com/swapped-losing-google-featured-snippet-case-study-228899 Honestly - no one knows. But you can implement semantic ItemList for this and this could trigger featured snippet for your page. PS: In first article WS have 9k featured snippets, but rank for 580 queries. LOL. -> https://twitter.com/glenngabe/status/689807106375979008
Intermediate & Advanced SEO | | Mobilio0 -
What are top 3 directives to prepare for a Google algorithm update?
What I would also look at is the data that you can find in Google Search Console about the backlinks that you have so you're able to check their quality.
Search Engine Trends | | Martijn_Scheijbeler0